added test for http://rdflib.net/issues/2006/11/23/n3_parser:_trying_to_get_filename+extension_in_path/issue
added test for http://rdflib.net/issues/2006/11/23/n3_parser:_trying_to_get_filename+extension_in_path/issue

git-svn-id: 60eb48102d1ca0c284ab3654bef916b01e1b221b@926 4f84a9ca-5c3e-0410-8a68-0bdf370325d5

nwebs/rdflib